Issued Patents All Time
Showing 26–50 of 59 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7236734 | Method and apparatus for electrostatographic printing with enhanced color gamut | Yee S. Ng, Diane M. Herrick | 2007-06-26 |
| 7218420 | Gray level halftone processing | Yee S. Ng | 2007-05-15 |
| 7139521 | Gloss and differential gloss control methodology | Yee S. Ng | 2006-11-21 |
| 7079281 | Edge enhancement processor and method with adjustable threshold setting | Yee S. Ng | 2006-07-18 |
| 7079287 | Edge enhancement of gray level images | Yee S. Ng | 2006-07-18 |
| 6608641 | Electrophotographic apparatus and method for using textured receivers | Peter S. Alexandrovich, Richard George Allen, Muhammed Aslam, Jiann-Hsing Chen, Diane M. Herrick +4 more | 2003-08-19 |
| 6538677 | Apparatus and method for gray level printing | John R. Thompson, Yee S. Ng, Eric K. Zeise, Eric C. Stelter | 2003-03-25 |
| 6466331 | Multi-bit rendering with single color and two-color capability | Yee S. Ng, Richard George Allen | 2002-10-15 |
| 6411745 | Method and apparatus to reduce cross-interference in reproduction of scanned halftone images | Lori Overturf, Isaac I. Ajewole | 2002-06-25 |
| 5956157 | Method and apparatus for locally blending gray dot types of the same or different types to reproduce an image with gray level printing | — | 1999-09-21 |
| 5812169 | Combined storage of data for two printheads | Richard George Allen | 1998-09-22 |
| 5729632 | Reproduction apparatus and method for adjusting rendering with toners of different particle sizes | — | 1998-03-17 |
| 5694224 | Method and apparatus for tone adjustment correction on rendering gray level image data | — | 1997-12-02 |
| 5689588 | Method and apparatus for increasing compressibility of multibit image data with the LSB value determined in the thresholding operation based on pixel position | Gregory Rombola, Thomas J. Wetzel | 1997-11-18 |
| 5625460 | Method and apparatus for locally switching gray dot types to reproduce an image with gray level printing | — | 1997-04-29 |
| 5477335 | Method and apparatus of copying of black text on documents using a color scanner | — | 1995-12-19 |
| 5471543 | Mixed screen frequencies with image segmentation | Yee S. Ng | 1995-11-28 |
| 5446561 | Method and apparatus for digital scale halftoning with variable screen structure for electrophotographic printing devices | Issac I. Ajewole | 1995-08-29 |
| 5313309 | Method and apparatus for printing halftones with a gray level printer with contour suppression and/or minimization of moire patterns | Yee S. Ng | 1994-05-17 |
| 5260807 | Method and apparatus for imbedding controlled structure for gray scale rendering | — | 1993-11-09 |
| 5258850 | Line screen design for gray scale rendering | — | 1993-11-02 |
| 5258849 | Halftone dot arrangement in gray level halftone printing | Yee S. Ng | 1993-11-02 |
| 5239390 | Image processing method to remove halftone screens | — | 1993-08-24 |
| 5204753 | Multi-bit rendering method and arrangement for continuous tone picture representation and printing | — | 1993-04-20 |
| 5200831 | Method and arrangement for locally switching gray dot types to reproduce an image with gray level printing | — | 1993-04-06 |